Ic Pin Function Descriptions - FUNAI DBVR-2700 Service Manual

IC PIN FUNCTION DESCRIPTIONS

[ VCR Section ]
IC501( SERVO / SYSTEM CONTROL IC )
Pin IN/ Signal
No. OUT Name
Input Signal from
1 IN SC2-IN
Pin 8 of SCART2
Video Head
PG- Switching Pulse
2 IN
DELAY Signal Adjusted
Voltage
P-ON Power
POW-
3 IN Detection Input
SAF
Signal
Tape End Position
4 IN END-S
Detect Signal
Automatic Frequency
5 IN
AFC
Control Signal
Video Envelope
6 IN
V-ENV
Comparator Signal
Key Scan Input
7 IN KEY-1
Signal 1
Key Scan Input
8 IN KEY-2
Signal 2
Deck Mode Position
9 IN
LD-SW
Detector Signal
Tape Start Position
10 OUT ST-S
Detector Signal
11 - N.U. Not Used
12 - N.U. Not Used
13 OUT D-V- Dummy V-sync
SYNC Output
REMOCO Remote
14 IN
N Control Sensor
Color Phase Rotary
15 OUT C-ROTA
Changeover SIgnal
Video Head Amp
16 OUT H-A-SW
Switching Pulse
H-A- Head Amp
17 IN
COMP Comparator Signal
Video Head
18 OUT RF-SW
Switching Pulse
19 OUT Hi-Fi-H- HiFi Audio Head
SW Switching Pulse
20 - N.U. Not Used
21 - N.U. Not Used
22 - N.U. Not Used
POWER "POWER" LED
23 OUT
LED Signal Output
"H" ≥ 4.5V, "L" ≤ 1.0V
Active
Function
Level
L/Hi-z
A/D
A/D
A/D
A/D
A/D
A/D
A/D
A/D
A/D
-
-
H/Hi-z
L
H/L
H/L
H/L
H/L
H/L
-
-
-
H/L
1-13-1
Pin IN/ Signal
No. OUT Name
"CASSETTE" LED
24 OUT CAS LED
Signal Output
TIMER "TIMER" LED Signal
25 OUT
LED Output
"REC" LED Signal
26 OUT REC LED
Output
27 -
N.U. Not Used
RGB- SCART 2 RGB
28 OUT THROUGH Through Control
2 Signal
29 OUT DVD LED "DVD" LED Signal
Output
30 OUT VCR LED "VCR" LED Signal
Output
Recoding Safety SW
REC-SAF- Detect (With Record
31 IN
SW tab="L"/ With out
Record tab="H")
32 - N.U. Not Used
33 - N.U. Not Used
System Reset
34 IN
RESET
Signal (Reset="L")
35 IN XC Sub Clock
IN
36 OUT XC Sub Clock
OUT
37 -
Vcc Vcc
38 IN X Main Clock Input
IN
39 OUT X Main Clock Input
OUT
40 - Vss Vss(GND)
41 -
N.U. Not Used
DVD- SCART 8Pin DVD
42 -
8PIN-IN Input Control Signal
43 IN
CLKSEL Clock Select (GND)
Clock Input
44 IN OSC
IN
for letter size
Clock Output for letter
45 OUT OSC
OUT
size
46 - NUB Not Used
47 -
PG/LP PG/LP
FSC-IN
48 IN 4.43MHz Clock Input
[4.43MHz]
49 -
OSDVss OSDVss
OSD-V-IN OSD Video Signal
50 IN
Input
51 - N.U. Not Used
52 OUT OSD-V- OSD Video Signal
OUT Output
53 -
OSDVcc OSDVcc
Active
Function
Level
H/L
H/L
H/L
-
L/Hi-z
H/L
H/L
H/L
-
-
L
-
-
-
-
-
-
-
H/L
L
-
-
-
-
-
-
-
-
-
-
H9308PIN